Question

我可以将过滤器添加到过滤月份的日期吗？

我知道我可以使用过滤器＆lt;％loop $ Courses.Filter（＆＃39; DateTo＆＃39;，＆＃39; 12-05-2017＆＃39;）％＆gt;，但这是一个过滤器特定的一天。我想做的是按月过滤，即＆lt;％loop $ Courses.Filter（＆＃39; DateTo.Month＆＃39;，＆＃39; February＆＃39;）％＆gt;？

这可能吗？

韦斯利

Answer 1

对于更高级的过滤，我通常在模型上创建一个处理过滤的函数

/**
 * Courses that take place in given month.
 * 
 * @param   int         $month
 * @return  DataList
 */
public function CoursesByMonth($month)
{
    $year   = date('Y');
    $day    = date('d');
    $endDay = cal_days_in_month(CAL_GREGORIAN, $month, $year);

    return $this->Courses()->filter(
        [
            'DateTo:GreaterThan' => $year . '-' . $month . '-' . $day . ' 00:00:00',
            'DateTo:LessThan' => $year . '-' . $month . '-' . $endDay . ' 23:59:59',
        ]
    );
}

然后你就可以在你的模板中使用它了

<% loop $CoursesByMonth(2) %>

我还没有真正测试过这个功能本身，所以它很可能无法正常工作，但希望这可以让你了解如何实现你的尝试。要做。

Answer 2

不知怎的，我不能让这个工作。我认为这与我目前的设置有关。让我给你一些背景知识。

所以我有3个php文件位于mysite / code（下面的文件）中。这些文件允许您创建具有不同课程日期的课程。这些课程应按月分组并显示在主页（HomePage.ss）上，但不知怎的，我无法完成这些课程。所以目前我已经为html添加了一些过滤器，这部分工作。因此显示月份，但课程不按月分组，而是按照他们的coursename分组。在这个问题的底部，您将看到我的解决方法。

我错过了什么或做错了什么？

<强> 1。 Courses.php

    <?php
    class Course extends DataObject {
        private static $db = array(
            'DateTo' => 'Date',
            'DateFrom' => 'Date',
        );
        private static $has_one = array(
            'Project' => 'Project'
        );

    }

<强> 2。 Project.php

<?php
class Project extends Page {
    private static $has_many = array(
        'Courses' => 'Course'
    );


private static $db = array(
        'courses_Check' => 'Boolean(1)',
        'courses_Title' => 'Text',
        'courses_Description' => 'HTMLText',
        'courses_TargetAudience' => 'Text',
        'courses_Goal' => 'Text',
        'courses_Length' => 'Int',
        'courses_Costs' => 'Currency',
        'courses_Content' => 'HTMLText',
        'courses_Learnings' => 'HTMLText',
        'courses_Accreditation' => 'HTMLText',
        'courses_Location' => 'HTMLText',
        'courses_AdditionalInfo' => 'HTMLText',     

    );

 public function getCMSFields() {
        // Get the fields from the parent implementation
        $fields = parent::getCMSFields();

        $fields->addFieldToTab('Root.Main', new TextField('courses_Title','Cursustitel'),'Content');        
        $fields->addFieldToTab('Root.Main', new HTMLEditorField('courses_Description','Cursus beschrijving'),'Content');
        $fields->addFieldToTab('Root.Main', new TextField('courses_TargetAudience','Doelgroep'),'Content');
        $fields->addFieldToTab('Root.Main', new TextField('courses_Goal','Doel'),'Content');
        $fields->addFieldToTab('Root.Main', new NumericField('courses_Length','Cursusduur aantal dagen'),'Content');
        $fields->addFieldToTab('Root.Main', new CurrencyField('courses_Costs','Kosten van de cursus'),'Content');
        $fields->addFieldToTab('Root.Main', new HTMLEditorField('courses_Content','Inhoud Cursus'),'Content');
        $fields->addFieldToTab('Root.Main', new HTMLEditorField('courses_Learnings','Leerdoelen'),'Content');
        $fields->addFieldToTab('Root.Main', new HTMLEditorField('courses_Accreditation','Accreditatie'),'Content');
        $fields->addFieldToTab('Root.Main', new HTMLEditorField('courses_Location','Cursuslocatie'),'Content');
        $fields->addFieldToTab('Root.Main', new HTMLEditorField('courses_AdditionalInfo','Meer informatie'),'Content');

        // Create a default configuration for the new GridField, allowing record editing
        $config = GridFieldConfig_RelationEditor::create();
        // Set the names and data for our gridfield columns
        $config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
            'DateTo' => 'Datum van',
            'DateFrom' => 'Datum tot',
            'Project.Title'=> 'Cursusnaam' // Retrieve from a has-one relationship
        ));    
        // Create a gridfield to hold the course relationship    
        $studentsField = new GridField(
            'Cursus Data', // Field name
            'Cursus', // Field title
            $this->Courses(), // List of all related students
            $config
        );        
        // Create a tab named "Courses" and add our field to it
        $fields->addFieldToTab('Root.Cursus data', $studentsField);

        // Remove Content Field
        $fields->removeFieldFromTab("Root.Main","Content");
        $fields->removeFieldFromTab("Root.Main","Metadata");

        return $fields;

    }

第3。 ProjectHolder.php

<?php class ProjectHolder extends Page { private static $allowed_children = array( 'Project' ); } class ProjectHolder_Controller extends Page_Controller { }

<强> 4。我的解决方法

      <div class="half">
        <% loop $Projects %>
        <% loop $Courses.Limit(1) %>
        <div class="tab">
          <% if DateTo.Month == "January" %>
          <input id="tab-one" type="checkbox" name="tabs">
          <label for="tab-one">January</label>
          <% else_if DateTo.Month == "February" %>
          <input id="tab-two" type="checkbox" name="tabs">
          <label for="tab-two">February</label>
          <% else_if DateTo.Month == "March" %>
          <input id="tab-three" type="checkbox" name="tabs">
          <label for="tab-three">March</label>
          <% else_if DateTo.Month == "April" %>
          <input id="tab-four" type="checkbox" name="tabs">
          <label for="tab-four">April</label>
          <% else_if DateTo.Month == "May" %>
          <input id="tab-five" type="checkbox" name="tabs">
          <label for="tab-five">May</label>
          <% else_if DateTo.Month == "June" %>
          <input id="tab-six" type="checkbox" name="tabs">
          <label for="tab-six">June</label>
          <% else_if DateTo.Month == "July" %>
          <input id="tab-seven" type="checkbox" name="tabs">
          <label for="tab-seven">July</label>
          <% else_if DateTo.Month == "August" %>
          <input id="tab-eight" type="checkbox" name="tabs">
          <label for="tab-eight">August</label>
          <% else_if DateTo.Month == "September" %>
          <input id="tab-nine" type="checkbox" name="tabs">
          <label for="tab-nine">September</label>
          <% else_if DateTo.Month == "October" %>
          <input id="tab-ten" type="checkbox" name="tabs">
          <label for="tab-ten">October</label>
          <% else_if DateTo.Month == "November" %>
          <input id="tab-eleven" type="checkbox" name="tabs">
          <label for="tab-eleven">November</label>
          <% else_if DateTo.Month == "December" %>
          <input id="tab-twelve" type="checkbox" name="tabs">
          <label for="tab-twelve">December</label>
          <% end_if %>
          <% end_loop %>
          <div class="tab-content">
            <ul style="line-height:1.8em; margin:10px 0;">
              <% loop $Courses.Sort(DateTo, ASC)  %>
              <li><a href="$URLSegment.Up">$DateTo.DayOfMonth $DateTo.Month $DateTo.ShortMonth - $DateFrom.DayOfMonth $DateFrom.ShortMonth: $Project.Title</a></li>
              <% end_loop %>
            </ul>
          </div>
        </div>
        <% end_loop %>
      </div>

Answer 3

模板中有太多的业务逻辑 - 您需要简化。我不太了解上面的代码，$ Projects循环的来源，但我的方法将如下所示，在PHP端移动尽可能多的逻辑。因此，请将以下内容添加到Project类中：

public function CoursesByMonth() {
  $months = array();

  foreach ($this->Courses() as $course) {
    $month = $course->DateTo->Month();

    if (!in_array($month, months)) {
      $months[] = $month
    }
  }

  // at this point you have all the distinct months, but the array it's not sorted by month, so let's sort it

  $months_sorted = array();

  foreach($months as $month) {
    $m = date_parse($month);
    $months_sorted[$m['month']] = $month;
  }
  ksort($months_sorted);

  // at this point you have a simple PHP array, with all the distinct months from all the courses, in the proper order
  // but this is useless in Silverstripe templates - so we need to do some other stuff here

  $result = new ArrayList();
  foreach ($months_sorted as $month) {
    $courses_for_current_month = $this->Courses()->filter('DateTo.Month' => $month);
    $result->push(new ArrayData(
      'Month'   =>  $month,
      'Courses' =>  $courses_for_current_month;
    ));
  }

  return $result;
}

...然后在模板中有这样的东西：

<div class="half">
  <% loop $Projects %>
    <% loop $CoursesByMonth %>
    <div class="tab">
      <input id="tab-{$Pos(1)}" type="checkbox" name="tabs">
      <label for="tab-{$Pos(1)}">$Month</label>
    <% end_loop %>

    <div class="tab-content">
      <ul style="line-height:1.8em; margin:10px 0;">
        <% loop $CoursesByMonth.Courses.Sort('DateTo', 'ASC')  %>
        <li><a href="$URLSegment.Up">$DateTo.DayOfMonth $DateTo.Month $DateTo.ShortMonth - $DateFrom.DayOfMonth $DateFrom.ShortMonth: $Project.Title</a></li>
        <% end_loop %>
      </ul>
    </div> <!--/ .tab-content -->
  </div> <!--/ .tab -->
  <% end_loop %>
</div> <!--/ .half -->

我没有测试过这一切，但据我所知，这是我能想到的代码。 即使它不起作用，它也会给你一些我非常肯定的想法。

将过滤器添加到循环并按月过滤

3 个答案: